• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Geological Engineering >Numerical Modeling for Centrifuge Tests on Large Deformations of Dyke on Liquefiable Soils
【24h】

Numerical Modeling for Centrifuge Tests on Large Deformations of Dyke on Liquefiable Soils

机译：离心机对液化土壤大变形的数值模拟

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In order to insure the safety of dyke founded on the liquefiable soils in the earthquake prone area, deformation analysis of dyke earthquake-induced is of prime importance. Dynamic centrifuge model tests and numerical predictions were conducted to investigate the seismic behaviors of dyke with a saturated liquefiable foundation in this paper. And detailed discussions and comparisons between numerical modeling and centrifuge tests were included. Centrifuge tests with peak shaking amplitudes of 0.08, 0.18 and 0.32 g in prototype scale were adopted to simulate the seismic performances of dyke on a saturated soil layer foundation with a relative density of about 30%. Effective stress analysis method based on a multiple shear plasticity model was employed for conducting the numerical predictions and validation. Moreover, the computational results for the case of 0.32 g were compared with the test. It is concluded that the measured and computed responses of settlement on the top of dyke, acceleration and excess pore pressure of sand deposit are in good agreement with each other. The physical and numerical models both indicate that the dyke on the liquefiable soils during earthquakes behaves larger settlement and lateral spread. And the stronger the motion, the larger deformation of dyke is. The ratios of excess pore water pressure are smaller in the liquefiable soil beneath the dyke in spite of larger deformations.
机译：为了确保在地震易发的液体土壤上取得的污染的安全性，堤坝地震诱导的变形分析是鼎盛的重要性。进行动态离心模型试验和数值预测，以研究堤坝的抗震性能与本文的饱和液化基础。包括数值建模和离心机测试之间的详细讨论和比较。采用峰值振动幅度为0.08,0.18和0.32g的离心机测试，以模拟堤坝上散热的地震性能，相对密度为约30％。基于多剪切塑性模型的有效应力分析方法用于进行数值预测和验证。此外，与测试进行了比较了0.32g的计算结果。结论是，沉淀物顶部的测量和计算的沉降答复，砂矿床的加速和过量孔隙压力均匀。物理模型都表明，地震过程中液体土壤上的堤坝表现得更大的沉降和横向蔓延。而且运动越强，堤坝的较大变形是。在堤坝下方的液化土壤中，孔隙水压力的比率较小，尽管变形更大。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号